diff --git a/hatchet_sdk/utils/typing.py b/hatchet_sdk/utils/typing.py
index 4a6d968a..db111db5 100644
--- a/hatchet_sdk/utils/typing.py
+++ b/hatchet_sdk/utils/typing.py
@@ -6,4 +6,7 @@
 
 
 def is_basemodel_subclass(model: Any) -> bool:
-    return isinstance(model, type) and issubclass(model, BaseModel)
+    try:
+        return issubclass(model, BaseModel)
+    except TypeError:
+        return False